By John Cross Mikel Arteta is on Barcelona’s hit list to replace departing boss Xavi. Arteta has 18 months left on his deal with Arsenal but the rebuilding job at the Emirates has won him plentyof admirers at the ailing Catalan giants. The Spaniard has transformed Arsenal from also rans into genuine title contenders since taking over from Unai Emery, and also lead them to FA Cup glory in 2020. And Arsenal are convinced he remains happy at the Emirates and is in for the long-haul because of his deep affection for the club and desire to keep on challenging Manchester City for honours. But despit…